Sorry about the spoilers, I forgot thatwas an unlockable char...Spoiler Alert!Jigglypuff
Now I feel like a noob,
I think there are lots of valid points to this thread, but it all basically comes down to personal preference. Every character has its strengths and weaknesses, almost to the point to where even talking about "tiers" is a waste of time.
I've lost track of the amount of times someone has told me "so and so is a crappy character, don't ever play as him/her" Just for me to say 'oh yea?' and slap them around a few times as the "low tier" characters. It pretty much boils down to which character fits you, or fits your playing style the best. Personally I like to play as every character, usually alternating a different character per round. That keeps the game fresh, and keeps my playing style constantly changing.
Although that pretty much means I won't every play tourney levels